| 单词 | bog-down | 
| 释义 | > as lemmasbog-down   bog-down  n. Cotton-grass (Eriophorum). ΘΚΠ the world > plants > particular plants > plants and herbs > a grass or grasses > reedy or aquatic grasses > 			[noun]		 > cotton-grass plant or flower moss-crop?c1475 fen-down1495 cotton-grass1597 silk grass1727 moor-palm1788 bog-down1794 moss1798 cotton-rush1826 lucky minnie's oo1866 cotton-sedge1872 moor-silk1879 month1881 month grass1881 1794    G. Adams Lect. Nat. & Exper. Philos. IV. xlvii. 348  				Touch the needle with a piece of bog-down, or a cork ball. 1865    Pall Mall Gaz. 24 Oct. 5  				Cloth made of bog-down (Anglice, cotton grass). < as lemmas | 
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